Question: When is the end time of the Republic of Tartarstan whom Rostam Minnexanov was head of government?
Paraphrase: When did the Republic of Tartarstan end when Rostam Minnexanov was head of government?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q5481 p:P6 ?s . ?s ps:P6 wd:Q983503 . ?s pq:P582 ?value}